YOUR WALL IS BLANK.
You wake up. You don't know what you were supposed to do today.
Take a photo of it. Write on it. Pin it up. Flip it over for the details.
Start with the button up top. Don't trust your memory — trust the wall.
THE BOX IS EMPTY.
Nothing finished yet. When you get something done, flip its print over and choose BOX IT — it comes off the wall and gets kept in here. Proof that you did it, even after you forget you did.